I plan on getting married

I’m currently only 19,

My boyfriend isn’t from the US and once he gets his visa I plan on marrying him so he can get a job so we can have a place of our own , starting with just renting.

(Of course i will also work)

But what is something they don’t tell you about life after marriage?

What do we need to know to live and not have it so difficult?

What advise do you have ?